W-band laser-controlled photonic crystal variable attenuator

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Colleges, School and Institutes

External organisations

  • Imperial College London
  • Centre for Terahertz Science and Engineering
  • Department of Materials


A photonic crystal W1 defect waveguide attenuator is demonstrated. Variable attenuation at W-band is achieved by illuminating the W1 defect waveguide with lasers with controllable output power levels. Measurements show that a minimum attenuation level of 45 dB is demonstrated across the whole 92-102 GHz band of operation of the W1 defect waveguide and >60 dB in a narrowband region of the operation.


Original languageEnglish
Title of host publication2014 IEEE MTT-S International Microwave Symposium, IMS 2014
Publication statusPublished - 1 Jan 2014
Event2014 IEEE MTT-S International Microwave Symposium, IMS 2014 - Tampa, FL, United States
Duration: 1 Jun 20146 Jun 2014

Publication series

NameIEEE MTT-S International Microwave Symposium Digest
ISSN (Print)0149-645X


Conference2014 IEEE MTT-S International Microwave Symposium, IMS 2014
CountryUnited States
CityTampa, FL


  • Attenuator, Laser, Photoconductivity, Photonic Crystal, W-Band